/*

 *
 *  Licensed under the Apache License, Version 2.0 (the "License"); 
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License. 
 *
 */
package scouter.server.util;

import scouter.util.RequestQueue;

public class AsyncRun extends Thread {

	private static AsyncRun instance = null;

	public final static synchronized AsyncRun getInstance() {
		if (instance == null) {
			instance = new AsyncRun();
			instance.start();
		}
		return instance;
	}

	private RequestQueue<Runnable> execute = new RequestQueue<Runnable>(128);

	public void add(Runnable r) {
		execute.put(r);
	}

	public void run() {
		while (true) {
			Runnable r = execute.get();
			try {
				r.run();
			} catch (Throwable t) {
				scouter.server.Logger.printStackTrace(t);
			}
		}
	}

}
